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In page María Ponce de Bianco:

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Between Thursday, 8 December and Saturday, 10 December 1977, GT 3.3.2 (Task Force 3.3.2), a state security organization under the command of Alfredo Astiz, kidnapped a group of 12 people linked to the Mothers of the Plaza de Mayo.[a] Among them was María Ponce, along with the other founders of the Mothers of the Plaza de Mayo, Azucena Villaflor and Esther Ballestrino, and French nuns Alice Domon and Léonie Duquet.[citation needed]